code: def n(name):
      """create a selector name (for ObjC methods)"""
      return objc.sel_registerName(_utf8(name))
  
file_path: catboost/contrib/python/ipykernel/py2/ipykernel/_eventloop_macos.py
imports: import ctypes
  import ctypes.util
  from threading import Event
label_desc: Use image node_id 2 for calling a global function with example usage: n(name) and returns: objc